zig/lib/compiler_rt/getf2.zig
Andrew Kelley c99c085d70 compiler-rt: break up functions even more
The purpose of this branch is to switch to using an object file for each
independent function, in order to make linking simpler - instead of
relying on `-ffunction-sections` and `--gc-sections`, which involves the
linker doing the work of linking everything and then undoing work via
garbage collection, this will allow the linker to only include the
compilation units that are depended on in the first place.

This commit makes progress towards that goal.
2022-06-17 16:38:59 -07:00

37 lines
1.2 KiB
Zig

///! The quoted behavior definitions are from
///! https://gcc.gnu.org/onlinedocs/gcc-12.1.0/gccint/Soft-float-library-routines.html#Soft-float-library-routines
const common = @import("./common.zig");
const comparef = @import("./comparef.zig");
pub const panic = common.panic;
comptime {
if (common.want_ppc_abi) {
@export(__gekf2, .{ .name = "__gekf2", .linkage = common.linkage });
@export(__gtkf2, .{ .name = "__gtkf2", .linkage = common.linkage });
} else {
@export(__getf2, .{ .name = "__getf2", .linkage = common.linkage });
@export(__gttf2, .{ .name = "__gttf2", .linkage = common.linkage });
}
}
/// "These functions return a value greater than or equal to zero if neither
/// argument is NaN, and a is greater than or equal to b."
fn __getf2(a: f128, b: f128) callconv(.C) i32 {
return @enumToInt(comparef.cmpf2(f128, comparef.GE, a, b));
}
/// "These functions return a value greater than zero if neither argument is NaN,
/// and a is strictly greater than b."
fn __gttf2(a: f128, b: f128) callconv(.C) i32 {
return __getf2(a, b);
}
fn __gekf2(a: f128, b: f128) callconv(.C) i32 {
return __getf2(a, b);
}
fn __gtkf2(a: f128, b: f128) callconv(.C) i32 {
return __getf2(a, b);
}